Warning-signal device.



W. W. DEAN. WARNING SIGNAL DEVICE. APPLICATION FILED MAYh m1.

1,152,008 Patented Aug. 31, 1915.

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OFFICE.

WILLIAM w. DEAN, or NOR'IE BIDGEVILLE, OHIO, ASSIGNOR, BY MESNE ASSIGN- Mmrrs, r THE GARFORD MANUFACTURING COMPANY, or ELYRIA, 01110, A con- PORATION 0F QHIO.

WARNING-SIGNAL DEVICE.

North Ridgeville, in the county of Lorain' and State of Ohio, have invented certain new and useful Improvements in l/Varning- SignalDer-icesrand I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to warning signal devices, such as are more particularly adapted for use on conveyances, such as automo biles, motor trucks, motor boats and the like,

though I do not desire to limit my invention to use on signal devices employed in this service only. Devices of this kind are constructed so that they may if desired be employed in exposed positions, where moisture, dust, dirt, etc, are apt to be projected into the interior of the device or caught and carried therein when the conveyance is in motion and when such foreign matter lodges inside of the instrument it may injure the mechanism and reduce the etliciency of the instrument. I prevent the lodging of this matter inside the horn by providing means for creating a draft through the instrument which will draw the foreign matter straight on through, removing it from the parts of the mechanism which it mayinjure. I

Other objects and purposes of my invention and the invention itself, will be best understood-by reference to the following description when taken in connection with the' accompanying illustration showing one specific embodiment of my invention, whilethe scope of the invention will be more particularly pointed out in the appended claims. Figure 1 is a general view of a portion of a conveyance to which a warning signal device is applied. Fig. 2 is a cross section of a warning signal device showing my invention applied thereto.

Referring now to Fig. 1, 1 is a conveyance, such as an automobile upon which is mounted a warning signal device 2, here shown as an electric horn. This horn is preferably controlled by a switch 3 mounted upon a steering wheel 4. Conductors 5 connect the switch with the horn 2. The warning signal device shown in the drawing, may consist of a frame piece 6, upon which a front 7 is fastened by means suchas screws 8.

.omitted entirely.

Specification of Letters Patent. Patented Aug. 31, 1915. I

Application filed May 1, 1911. Serial No. 624,330.

chamber 9 is formed within the signaling deviceand a vibratory member, preferably a diaphragm 10 mounted in the chamber, said diaphragm dividing the chamber into two cells one in front and the other to the rear thereof. Means for operating the diaphragm, such as electromagnets 11, are mounted in the chamber and secured pref erably to the frame piece 6. These magnets control a .vibratory armature 12 which is adapted to cause the diaphragm to vibrate and produce signals. A resonator 14 may be employed and when employed is bestmounted over an opening 15 in the front wall. of the chamber 7. The resonator is here shown curved outward toward the ends 16 as shown at 17 forming a bell shaped mouth, thus making the elements of the resonator curved. I have shown this form of resonator though any suitable resonator may be used and if desired this element may be A back 20 is mounted upon the frame 6 to cover the vibratory member and other mechanism inclosed within said chamber. Means are provided for creating a draft through the chamber in front of the diaphragm, said means consisting preferably of an opening in the walls of the chamber 'so located that air entering through the opening provided for the pas- 8 sage of sound waves (shown at 15) will pass on out through the opening in thewalls. I

' prefer to insert tubes in these openings as shown in Fig. 2. The diaphragm 10 is pierced with openings 21 and tubes 22 are preferably mounted in said openings and in the form shown fastened to the diaphragm so as to vibrate therewith. These tubes preferably extend to the rear and the outside of the device through the openings 25 which are cut in the rear wall of the chamber 9. I may, however, direct these tubes otherwise and may lead them elsewhere without departing from the spirit of my invention as defined in the'appended claims. When the conveyance is moving forward, there will be an in-rush of air through the resonator and the opening 15 into that part draft passing out through the openings 21 and the tubes 22 to the outside. It will thus be seen that by ventilating the horn I prevent the accumulation of dirt, moisture and other foreign matter inside the chamber, thus enabling the horn to operate at the highest efficiency at all times.

It will be obvious to those skilled in the art that numerous and extensive departures from the form and details of the apparatus here shown may be made without departing from the spirit of this invention, the same being herein sliown solely for the pu'rposeof clearly illustrating one specific embodiment of such invention.

I claim: 1. In an alarm signal device adapted for use in exposed positions, the combination of av chamber, a perforated vibratile diaphragmv mounted in said chamber, means to operate said diaphragm, one of the walls of said chamber being provided with a hole, a resonator mounted in said hole, the opposite wall of said chamber being provided with an opening whereby a draft is created through said chamber to remove dirt, water,

etc., from said chamber and prevent it lodging in the signaling device. I

2. In a signaling device, the combination of a plurality of parts forming the walls an opening for the egress of sound waves,

the rearwardly facingwall of the front cell which projects'laterally beyond the rear cell being provided with an opening communicating with the exterior of the signaling device, the openings in the forwardly facing wall and rearwardly facing wall being out of alinement whereby a draft is permitted to flow through the cell around the central part of the diaphragm'for the purpose of preventing the lodging of dirt, water, etc. in

' the chamber.

3. In a device of the class described, the combination of a conveyance, a signaling device mounted thereon, said device including aplurality of. parts forming the walls of a chamber, a portion of said chamber walls extending laterally beyondthe main part of the chamber, a sonorous diaphragm mounted in said chamber, means in the chamber for operating the diaphragimthe front wall of the chamber being providedwith an opening for th-eegress'of sound wavesyandthe laterally projecting walls of the chamber 4 portion of the diaphragm.

4. In .a device of the class described, the combination with a conveyance of a forwardly directed resonator, a chamber connected with one end of said resonator, a per-' forated vibratile diaphragm in said chamber and means to operate said diaphragm, the rear wall of said chamber being provlded with an opening whereby a draft is created through said chamber when said conveyance is in motion to prevent foreign matter lodging in the signaling device.

5. In an automobile horn, the combination of a plurality of parts forming the wallsof a chamber, one of said parts having an opening therein, a diaphragm clamped between two of said parts having an opening therein of substantially the same size asthe opening in one'of said parts whereby for--- eign matter may escape from said chamber and means to operate said diaphragm.

' 6. In anautomobile horn, the combination of a plurality ofparts forming the walls of a chamber, a sonorous diaphragm having an opening therein, one of said parts being provided with. an opening of substantially the same size as the opening in the diaphragm whereby foreign matter may escape from the chamber, and means to operate said diaphragm.

7. In an automobile horn, the combination of a plurality of parts forming the walls of a chamber, a diaphragm housed in one part of said chamber and means to operate the same housed in another part of said chamber,

the part in which the diaphragm is housed extending laterally beyond the other part, such. extended part having openings in its rear wallcommunicatingwith the exterior of the chamber and the {front wall of the chamber having an opening near the center thereof whereby a draft may be allowed to flow through that part of the chamber in front of the diaphragm.

8. In a device of theclass described, the combination of a conveyance, a chamber carried thereby, a perforated sound producing diaphragm in said chamber, said chamber having an opening in the front thereof forv the passage of sound waves, said chamber having an opening in the rear wall adjacent the periphery of the diaph ragm whereby a tion of a plurality of parts forming the walls ofa chamber including a front'walland a rear wall, a sonorous diaphragmin said chamber, means for agitating said diaphragm to cause it.to'sound avsi'gnal, me

,chanical devices for communicating agitations from said means to said diaphragm,

'vided with an opening near the center thereof for the passage of'sound waves, the rear wall of the chamber having an opening therein near the periphery thereof and out of alinement with the opening in the front wall, whereby a draft may be allowed to flow in said chamber around the central part of the diaphragm when the horn is in motion, preventing the lodging of foreign matter in said chamber.

10. In a device of the class describedfthe combination with a conveyance of a fora wardly directed resonator carried thereby, a

chamber communicating with said resonator, an opening in the front wall of said chamber for the passage of sound waves, a vibratile diaphragm mounted in said chamber having an opening therein, a duct in said opening leading to the outside of said chamber and means to operate said diaphragm.

11. In a device of the class described, the combination with a conveyance of a warning signal device carried thereby, a forwardly directed resonator on said signal de: vice, a pluralityof parts forming a chamber in said device, an opening in one of said parts for the passage of sound waves, said resonator communicating through said opening with said chamber, a vibratile diaphragm in said chamber, having an opening therein, the walls of said chamber being provided with a second opening, a duct leading from the opening in the diaphragm through said second opening in the walls of the chamber and means to operate said diaphragm.

12. In a device of the class described, the combination with a conveyance of an alarm signal device mounted thereon and having its front directed forward, a plurality of parts forming the walls of a chamber including a forwardly facing wall and a rear wardly facing wall, signal producing apparatus in said chamber out of the path of the draft, said front chamber Wall having an opening therein near the center thereof and in front of the signal producing apparatus for the passage of sound waves from the in.- terior of the chamber to the outside, the rearwardly facing Wall of the chamber being provided with an opening near the periphery of the chamber out of alinement with the opening in the forwardly facing wall and to one side of the signal producing apparatus whereby a draft may be allowed to flow through the chamber and around to one side of the signal producing apparatus when the conveyance is in motion, substantially for the purpose described.

13. In a signaling device, the combination of a plurality of parts thereof forming a chamber, a vibratile diaphragm in said chamber, mechanism in said chamber for vibrating said diaphragm, an opening in the front wall of said chamber for the egress of sound waves and a second opening in the rearwardly facing wall of said chamber out of alinement with the opening in the front wall, said opening permittinga draft to pass through said chamber in front of said diaphragm when the signal device is moved forward, said diaphragm being mounted'in front of said mechanism protecting it from the draft and the foreign matter carried thereby.

In testimony whereof, I afiix my signature in the presence of two witnesses.

WILLIAM W. DEAN.

Witnesses I F O. RICHEY, A. D. T. LIBBY. 

